baber/WOPTO huggingface dataset:
Patent GB-640488-A (GB)
Title: Improvements in motion picture film television projectors
IPC: H04N3/40
Filed: 1948-02-27
Abstract: 640,488. Television. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 27, 1948, No. 6116. Convention date, Feb. 28, 1947. [Class 40 (iii)] In an intermediate film television transmission system in which the film is illuminated by a light flash produced by the discharge of a condenser through a gaseous discharge lamp, the condenser being repeatedly charged to a voltage sufficient to maintain but insufficient to initiate a discharge through the lamp and the discharge being initiated by means of an auxiliary pulse, the discharge circuit for the lamp and condenser includes a grid-controlled gas-filled discharge device which is switched on in synchronism with the initiation of a discharge. As shown in Fig. 1, a film 10 is illuminated by light flashes produced by a gaseous discharge lamp 14, the flashing rate of which is controlled by frame synchronizing pulses 51 so that an image of the film is projected on to a picture signal generating tube 251 during frame re-trace periods and subsequently scanned in conventional manner to produce television signals for transmission. The lamp discharge which is initiated by means of short duration high voltage pulses 46 produced by a blocking oscillator 50 and amplified in a pulse amplifier 47 (Figs. 1 and 2), is maintained for a predetermined interval by the discharge, through the lamp, of a condenser 40 which is repeatedly charged from a source 41 to a potential which is sufficient to maintain but insufficient to initiate the discharge. To control the wave-shape of the discharge current and thereby the intensitytime characteristic of the light flash, the invention provides a circuit'comprising an inductance 44 and a grid-controlled gas-filled tube (e.g. thyratron) 45 in the discharge path of the lamp and condenser, the value of the inductance being such that, when the thyratron is rendered conductive by means of switching pulses produced by a multivibrator 55 under the control of frame synchronizing pulses, the circuit resonates at a frequency substantially higher than the desired light pulse frequency so that the first half-cycle (i.e. positive) of the discharge current wave produces a light pulse, the length of which is equal to, or slightly less than, the percentage of the frame scanning period which is available for retrace and the thyratron then cutting off during the second half-cycle (i.e. negative) and so preventing the production of more than one light pulse during each retrace interval.
Patent GB-457444-A (GB)
Title: Improvements in moulding machines
IPC: C13B5/06
Filed: 1935-02-26
Abstract: 457,444. Moulding molasses &c. FAIRRIE, J. L., Dunster House, Mincing Lane, London. Feb. 26, 1935, No. 6132. [Class 87 (ii)] Agglomerable material such as a mixture of molasses and dried beet pulp is moulded by a pair of oppositelyrotating cylinders 11, 12 having longitudinal mould cavities 13 cooperating with a bed 39 and with plungers movable axially in the cavities. The material fed from a hopper is forced lightly into the cavities by the projections between pairs of cavities of one cylinder being arranged opposite the cavities of the other cylinder in the bight between the cylinders. As the cylinders rotate, the open sides of the cavities are closed by the bed 39, which may be heated by the circulation of oil &c., and plungers rotatable about the axes of the cylinders are moved longitudinally by fixed cams to compress the material against a fixed abutment plate. The plungers, which are provided with spring give-way devices, are then withdrawn to allow the material to expand, and are finally advanced to move the moulded products into position to be removed by a stationary finger into one or two shoots. Specification 452,515, [Group I], is referred to in the Provisional Specification.
Patent GB-682750-A (GB)
Title: Improvements in or relating to safety valves for gas burners fitted with a pilot burner
IPC: F23N5/10
Filed: 1951-03-14
Abstract: 682,750. Valves. CIPAG SOC. ANON. March 14, 1951 [June 19, 1950], No. 6148/51. Class 135. In a safety valve for a gas burner with a pilot burner and having two main valves, one 1 secured to an armature 3 adapted to be held open against a spring 5 by an electromagnet 7 energised from a pilot-burner responsive element, and the other 2 closing the gas passage until the pilot burner is alight by means of a first operating member 13 which allows it to seat under the action of a resilient member 11 against the action of a return spring 16 and which also opens the first valve, a device 18 locks the operating member in the position in which it opens the first valve until the responsive element is sufficiently heated by the pilot burner and means are provided for allowing the operating member to resume its initial position of rest in which the other valve is opened. When the member 13 is depressed the valve 2 closes the main valve opening 10 and the operating rod 12 continues downwards to open valve 1 while a coned part 15 of the member having one or more shoulders 23 snaps past one or more spring-loaded blades 18 which then abut the shoulders and hold the member in its depressed position. Gas then passes to the pilot burner through opening 24. When the magnet is energised, a spring-loaded member 27 carrying a bevel-ended sleeve 26 is depressed to force the blades apart and through the part 15 press the armature on to the magnet which then holds the valve 1 open. On releasing the member 27, the springs 16, 29, return.the members 13, 27 to their initial position, the rod abutment 17 then holding the valve 2 open. The blades may be unlocked by a pilot burner controlled electromagnet acting after the energisation of the first magnet, or by clockwork mechanism wound up by the member 13. The member 13, 15 may be rotated about its longitudinal axis to engage or disengage the blades. A flexible diaphragm 9 seals the magnet and armature from the gas.
Patent GB-491319-A (GB)
Title: Improvements in or relating to fuel tanks or like containers
IPC: B60K15/077
Filed: 1937-03-02
Abstract: 491,319. Tanks. DELANEY, C. T., and GALLAY, Ltd. March 2, 1937, No. 6169. [Class 69 (i)] [Also in Group XVII] The filling of fuel tanks or like containers having internal baffles a is facilitated by the provision of flaps d with lever or other mechanism for moving them from the position shown in Fig. 1, in which they close apertures in the baffles, to that shown in Fig. 2, in which they open the apertures to allow free passage of the fluid when the tank is being filled. In the construction shown, the flaps when in the latter position form a horizontal baffle. When the tank has a single outlet the baffles may have additional small apertures to allow the fluid to pass to it. Another tank is described in which two flaps, one above the other, are provided in each vertical baffle, the flaps forming two horizontal partitions when open. Springs, weights, or locking devices may be provided to maintain the flaps in the closed position.
Patent GB-671497-A (GB)
Title: Electrical control means for lancets
IPC: A61B18/12
Filed: 1950-03-13
Abstract: 671,497. High frequency section. HANRIOT, R. March 13, 1950 [March 11, 1949], No. 6286/50. Class 81 (ii). In an arrangement in which an inert gas is supplied to the electrode of a H.F. cutting instrument the supply of electric power is made dependent on an adequate supply of gas. Contacts S, S<SP>1</SP> are connected in series with the power supply to the H.F. generator 8 and are controlled respectively by differential pressure sensitive elements 5a, 5b connected to opposite ends of a constriction in the gas supply pipe and by a single pressure sensitive element 6. Unless both the pressure drop across the constriction and the output pressure are adequate the power supply to the cutting instrument is interrupted.
Patent GB-194922-A (GB)
Title: Improvements in electric switches
IPC: H01H15/02
Filed: 1922-03-03
Abstract: 194,922. White, J. C. March 3, 1922. Sauitches, quick-action, comprise switch blades 5 pivoted at 4 to a longitudinally moving operating bar 2 and at 11 to an element 12 which moves against spring pressure in a direction perpendicular to the bar 2. The switch may be incorporated in a lamp holder, in which case there are two elements 12, each constituted by the upper of the usual spring connected elements 12, 13 of a spring plug. The springs between the elements 12 and 13 then serve both to provide the quick action and to press the contacts 13 against a lamp inserted in the bayonet sleeve 15. The bar 2 is rectangular at the centre to prevent rotation.
Patent GB-124445-A (GB)
Title: Improvements in and relating to Corrosive Fluid Valves.
IPC: F16K27/02
Filed: 1919-03-13
Abstract: 124,445. Chemical Equipment Co., (Assignees of La Bour, H. E., and Grassby, G. A.). March 13, 1918, [Convention date]. Lift valves; casings; leakage, preventing; materials, special; .-A valve for corrosive fluids comprises a non-rotatable conical head 40, Fig. 1, engaging a seating 9 which clamped between casing flanges 7, 8 so as to be readily removed and reversed or replaced without disturbing the valve or its connexions. The valve and seating may be made of non-corrodible material, such as lead. The valve spindle is preferably protected by a sleeve 34 of non-corrodible metal and passes out through a stuffing-box 13 to an internallyscrewed operating-handle 27. The handle operates on a sleeve screw 24 carried in a bridgemember 17. The follower 36 for the packing- gland is in the form of a sleeve screwed into the sleeve screw 24, as shown, and acts also as a guide for the valve spindle. The casing is preferably divided with the flanges 7, 8 at an acute angle, as shown. The back of the valve is formed with a conical surface 41 adapted to seat in a corresponding recess 42 to enable the stuffing- box to be re-packed whilst the valve is under pressure.
Patent GB-363240-A (GB)
Title: Improvements in weft-end holding or controlling devices for looms having automatic weft-replenishing mechanism
IPC: D03D45/50
Filed: 1931-02-28
Abstract: 363,240. Weft end holders for looms having automatic weft replenishment. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Crompton & Knowles Loom Works ; Worcester, Massachusetts, U.S.A.) Feb. 28, 1931, No. 6358. [Class 142 (iii).] The weft ends from the reserve bobbins 40 in the magazine M pass between fluted conical rollers 63 pinned to shafts 45 mounted in the web 42 of a box-like casing 41 clamped at one side to a holder 40 and having a removable plate. The shafts have intermeshing gears 50 to one of which a ratchet wheel 51 is clamped and is engaged by a spring pawl 53 moving with a weighted cylinder 54 suspended by spring links 55 from a flange 43 of the casing. Vibration of the loom causes oscillation of the cylinder 54 under the control of a stop screw 58 and consequent actuation of the pawl 53 and of the shafts 45 and rollers 63, which thus maintain the weft ends taut. The slots between the teeth or flutes of the rollers are larger than these teeth, which therefore do not engage one another and pinch the weft ends. These extend over an adjustable guard 67 having spaced parallel arms secured in position by screws 69, whereby the guard can be moved with respect to the notch between the rollers into which the weft ends are dropped. A modification is described wherein fluted or ribbed cylinders replace the conical rollers and a weft end guide with a scalloped edge having a combing action is used. In another modification two endless rolls replace the rollers. They are provided with deflectors for moving the weft ends through a tortuous path.
Patent GB-713883-A (GB)
Title: Improvements relating to swivelling lamps or the like
IPC: F21V21/26
Filed: 1952-03-12
Abstract: 713,883. Adjustabne brackets. SOLERE, F. S. A. March 12, 1952 [March 28, 1951], No. 6424/52. Class 52(5) [Also in Group XXV] A supporting stem b for a swivel lamp has at one end a fixed ball 1 engaged between the two arms of a U-shaped swivelling fork 2 provided at one of its ends with an adjustable counterweight 3, each arm having a circular hole of a diameter smaller than that of the ball so as to constitute a seating for the latter. The pressure of the arms on the ball may be adjusted by a button 4. The other arm of the fork is provided with a flexible or telescopic shaft 9 connected by a ball and socket joint 7, having a pressure-adjusting button 8, with the lamp-head 6. The supporting base a of the lamp may be replaced by a clamp.
Patent GB-563874-A (GB)
Title: Improvements in or relating to beer engines
IPC: B67D1/16
Filed: 1943-04-22
Abstract: 563,874. Beer engines. TURLEY & WILLIAMS, Ltd., SMITH, C. D., and OTTON, D.H. April 22, 1943, No. 6461. [Class 102 (i)] In a beer engine having a non-return inlet, valve in the base of the pump cylinder, the pump piston has a small clearance from the wall of the cylinder, and means are provided for connecting the bottom of the cylinder to the suction pipe for emptying the cylinder. In the form shown in Fig. 1, the non-return valve 3 is byepassed by a passage 5 controlled by an externally-operated valve 7. In the form shown in Fig. 4, the non-return valve 17 is lifted. by an externally-operated screwed spindle 16.
Patent GB-125508-A (GB)
Title: Improvements in or relating to Pumps.
Inventor: TAYLOR ARCHIBALD
IPC: F04C9/00
Filed: 1918-04-17
Abstract: 125,508. Taylor, A. April 17, 1918. Fixed-abutment type; packing drums etc.; valves, distributing &c.-In a rotary pump comprising oscillating vanes 4 carrying delivery valves 7 and co-operating with a T-shaped abutment 6 carrying inlet valves 8, the boss 2<1> of the vanes is fitted with a packing-ship 5 which bears on the concave surface 6<c> of the abutment.
Patent GB-247756-A (GB)
Title: Improvements in and relating to ball and ring and roller and ring mills for grinding and crushing
IPC: B02C15/02
Filed: 1925-03-10
Abstract: 247,756. Hall, C. E. V. March 10, 1925. Ball-and-ring mills; roller-and-ring mills.- Relates to grinding or crushing mills of the type in which balls or rollers, or both, are carried by pendulum arms which are suspended or pivoted on ball or other bearings from a head mounted on a shaft so as to be rotated and to swing outwards under centrifugal force. The pendulum arms are mounted in ball or roller bearings in housings pivotally connected to a member or sleeve rotatable over a stationary shaft. The pendulum arms f, Fig. 1, are suspended from ball or roller bearings g in housings e which are suspended by bolts or pins d from lugs on a sleeve or head b rotated over the stationary vertical shaft a by means of a pulley b'. The grinding-track j against which the balls or rollers h at the lower ends of the arms f bear may be stationary or rotating. Fans o on the arms f blow the ground material through a screen n, the grinding-chamber k being provided with :a dust-proof cover m. Fig. 4 shows a mill with a stationary horizontal sbaft 12 mounted in standards 13 on a base 14 and carrying a sleeve 16 which is rotated by means of a pulley 15 and has lugs 17 to which are pivoted the housings 18 in which the pendulum arms 19 are mounted in ball or roller bearings 20. The material to be ground is fed into the grinding- chamber by a hopper 24, and the ground material passes into a receiving-hopper 25. In fine, grinding, the outlet of the hopper 25 is closed and the material is withdrawn through a passage 26 by a fan 27.
Patent GB-984616-A (GB)
Title: Improvements in and relating to rising door hinges
IPC: E05F1/06
Filed: 1964-02-17
Abstract: 984,616. Rising hinges. F. PUCHTLER. Feb. 17, 1964 [Feb. 16, 1963], No. 6541/64. Heading E2F. A rising door hinge has co-operating cams 18, 24 located at the ends of two bearing sleeves 2, 4 through which the bearing bolt 3 passes, each cam respectively being fast on the end of a guide tube 23, 25 which is inserted in its bearing sleeve and guides the bearing bolt. The guide tubes are made from brass or similar bearing metal and are firmly attached to the cams, which are made from steel or hard-chrome steel, by adhesive, soldering or by a press fit. Two bearing sleeves 4, 5 are formed at the side of flap 6 by bending the sheet metal, a bearing sleeve 2 being similarly formed at the side of flap 1. Axial grooves 9 in the sleeves 2, 4 engage with an extending nose 19 of the cams 18, 24 ensuring no movement of the cams relative to the sleeves. A guide sleeve 26 similar to the sleeves 23, 25 is inserted in the bearing sleeve 5. The bearing bolt 3 is provided with a nose 10 which engages with a slot 8 in the sleeve 4 and a screw 16 engages with a threaded bore in the opposite end 15. The space between the cams and the bearing bolt acts as a means for lubrication. The hinge is completed by the covers 29, 30, 31 which cover the sleeves 2, 4, 5 and have a slot 32 for the passage of the projections of flaps 1 and 6.
Patent GB-1534107-A (GB)
Title: Enlargement of tube ends
IPC: B21D39/20
Filed: 1977-02-17
Abstract: 1534107 Tube expanding BALCKE-DURR AG 17 Feb 1977 [14 April 1976] 06579/77 Headings B3J and B3Q A tube expander comprises a probe 3 with spaced seals 4, a pump 6, a pressure transmitter 12 and a fluid separator 14. The separator 14 isolates water supplied to the probe from hydraulic oil used to pressurize the water, one side of the separator is connected 16 to a water tank 15 and by 18 to one side of the intensifier 12. The other side of the separator is connected through a valve 9 to the pump 6 or an oil tank 7. Water drawn into the separator 14 from the tank 15 is supplied to the intensifier 12 and probe 3 with the valve 9 set as in Fig. 1. In the other setting (Fig. 2) oil is supplied along line 11 to the intensifier to pressurize the water and expand the tube 1.
Patent GB-267306-A (GB)
Title: Improvements in or relating to stamping or embossing machines
IPC: B41F19/06
Filed: 1926-03-09
Abstract: 267,306. Wade, H., (Boehner, J. P.). March 9, 1926. Embossing-machines. - In an embossing- machine a vertically reciprocable head arranged above the work-supporting table and carrying impression characters is adapted by its movement to feed forward a strip of flexible marking- material, such as gold leaf, disposed between the impression characters and the work. The stamping-head carries a chase or frame 13, Figs. 1 and 5, containing type or other impression characters 14 above which are chambers 15 containing electrical heating-units 16. The stamping-head is mounted on a vertical shaft 17 reciprocable within the upper horizontal arm 10<b> of a frame 10, the lower arm 10<c> of which supports a work-supporting table 11 mounted on a screw-shaft 12. Blade-springs 18 secured between the frame 10 and the stamping-head normally hold the 'latter in its raised position, depression being produced by a lever 24 adjustably connected by a bolt 26 to a quadrant 23 secured on a transverse shaft 22 mounted between two extensions 21 on the frame arm 10<b>. The shaft 22 is secured to a crank arm 28 pivoted to an arm 30 which terminates in a ball seated within a socket in the upper end of the shaft 17. The roll 32 of gold leaf or the like is mounted on a shaft 33 carried by arms 34 attached to the stamping-head, and is braked by springs 35. The strip passes from the roll 32, under the type 14, and up between two friction rollers 36, 37 at the other end of the arms 34. The roller 36 is geared to a ratchet wheel 46 which is rotated at each upward movement of the stamping-head by a pawl 48 on an arm 47 pivoted on the ratchet wheel shaft and connected to a parallel link system 50-52. The mid-point of the link 52 is pivoted on the frame arm 10<b>, so that on downward movement of the stamping-head the pawl moves upwardly and overrides the ratchet teeth. When the stamping-head is in its upper position the gold leaf is held slightly below the type 14 by two horizontal rods 38 arranged one at each side thereof upon vertical rods 39 slidably mounted within holes in the arms 34 and pressed downwardly by springs 40. The links 50, 51 are adjustable to enable the feeding-stroke of the pawl to be varied, and, by providing a lost motion connection at the lower end of the link 50, the feed is delayed until the gold leaf has been lifted clear of the work and has been removed from the face of type by the spring-urged rods 38.
Patent GB-1248199-A (GB)
Title: Improvements in or relating to tilting-head axial piston hydraulic machines
Inventor: THOMA JEAN ULRICH
IPC: F04B1/20
Filed: 1970-02-11
Abstract: 1,248,199. Reciprocating pumps and motors. J. U. THOMA and R. GALDABINI. Feb.11, 1970 [March 5, 1969], No.6637/70. Heading F1A. An axial piston tilting head type pump or motor has a pair of tilting head trunnions 4 mounted in trunnion bearings 12 disposed between the opposing faces 11 of two casing sections 1a, 1b the casing being divided on a plane containing the tilting axis 3. The casing sections are held together by bolts, and a pair of cover-plates 14 close the circular apertures formed by the surfaces 11, an axial thrust bearing ring 13 being located between each cover-plate 14 and the associated trunnion 4. The inlet and outlet passages 5 to the cylinder block 2 are located in the trunnions 4 and are led out through the coverplates 14 via connecting sleeves 16. The casing section 1b is filled with lubricant and leakage is prevented by an annular seal between the two casing sections, the seal having two diametrically opposed circular portions 23 to effect a seal between the surfaces 11 and the cover-plate 14. In a modification, Fig. 4, the connecting sleeves 30 each have a radial flange forming a plane surface 31 co-operating with a plane surface on the cover-plate 14, to allow for small radial movements to compensate for tolerance errors. A groove 32 in the surface 31 contains an annular seal.
Patent GB-555103-A (GB)
Title: Improvements in or relating to optical and electrical means for determining the position of an object
IPC: G01P3/40
Filed: 1942-05-18
Abstract: 555,103. Selective signalling. SOC. GENEVOISE D'INSTRUMENTS DE PHYSIQUE. May 18, 1942, No. 6726. Convention date, July 22, 1941. [Class 40 (i)] [Also in Groups XX and XL] The position of a scale division 2 or other subject is determined by means of a lens 3 and an oscillating beam deflector plate 4 causing an image of the division to oscillate across slit apertures in a grid 9, the transmitted light influencing a photo electric cell 10 connected through an amplifier 11 to a relay 12 feeding a lamp 18 intermittently illuminating a rotating disc 13 bearing diametrically opposite marks 14, 14a. The periods of oscillation of the glass plate 4 and of a rotation of the disc 13 are equal and may be such that persistence of vision produces apparent continuity of illumination of the marks 14, 14a. Oscillation of the plate 4 is effected by a coil 7a wound round the plate, the whole unit being mounted on flexible blades 5, 5a in the air gap between pole pieces 8a. Alternating current is supplied from a network 20 to operate the coil, and to drive a synchronous motor 17 rotating the disc 13. If the division 2 is on the optical axis of the lens, 3, the intervals between successive flashes on to the cell 10, and consequently of the flashes of the lamp 18, are equal, and marks 14, 14a are in the same position when illuminated thus appearing to be superposed. If the division 2 is not on the optical axis, the intervals are alternately long and short, and the marks 14, 14a when illuminated occupy different positions. A scale 19 may be provided to facilitate measurement of the separation of the marks, and the marks may be such that they can be individually distinguished. The disc 13 may be transparent and may be covered by an enclosure 21 having a viewing window.